/**
 * 匀速运动
 * @param {*} ele 
 * @param {*} target 
 */
function moveAnimation (ele,target) {
	clearInterval(interId);
	interId=setInterval(function () {
		// x:小盒距离 大盒子的距离 和 target目标距离
		// x800|0 == target800|0 ,,清空定时器
		// x0-799 > target 0, 向左  点击向左 moveAnimation(small,0)
		// x0-799 <target 800 向右  点击向右 moveAnimation(small,800)
		var x = ele.offsetLeft;//400,800 0-500
		if (x==target) {
			clearInterval(interId);
		} else if(x>target){
			x-=30;
			x=x<target?target:x;
			ele.style.left=x+'px';
		} else if(x<target){
			x+=30;
			x=x>target?target:x;
			ele.style.left=x+'px';
		}
	},10)
}
var interId;
/**
 * 缓速动画
 * @param {*} ele 
 * @param {*} target 
 */
function slowMoveAnima (ele,target) {
	clearInterval(interId)
	interId=setInterval(function () {
		if (ele.offsetLeft==target) {
			clearInterval(interId);
		} else{
			var x = (target-ele.offsetLeft)/10; // (700,0)(200,800)
			x= x>0?Math.ceil(x):Math.floor(x);
			ele.style.left=ele.offsetLeft+x+'px';
		}
	},10);
}
